[pkg-lighttpd] Bug#560837: fix breaks installs not using port 80

[Ken Bowley]

The "fix" to use_ipv6.pl breaks installations where lighttpd is running on 
a port other than port 80.  In our case, we have apache on port 80, and 
lighttpd running on port 83.  The upgrade to 1.4.25-2 failed because 
apache is already listening on port 80.

-- 
Ken Bowley
System Administrator
Lunar Reconnaissance Orbiter Camera Science Operations Center
School of Earth & Space Exploration
Arizona State University